Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 252, NWS Philadelphia/Mount Holly

July 29, 2023Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2023, 12:43 AM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 29, 2023, 12:43 AM EDT (04:43 UTC)
Expired
Jul 29, 2023, 1:30 AM EDT
In force
47 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 04:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 4.7 hours before the alert went out and 155 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2023-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3118 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2023-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3118 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1098 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
1.5
Supercell composite
11.4

Open this sounding in Storm Lab

The text

As transmitted.

535 
WUUS51 KPHI 290443
SVRPHI
NJC001-009-011-290530-
/O.NEW.KPHI.SV.W.0252.230729T0443Z-230729T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1243 AM EDT Sat Jul 29 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Atlantic County in southern New Jersey...
  Southeastern Cumberland County in southern New Jersey...
  Northwestern Cape May County in southern New Jersey...

* Until 130 AM EDT.

* At 1243 AM EDT, a severe thunderstorm was located over Fortesque,
  or 11 miles southwest of Millville, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Vineland, Millville, Cumberland, Somers Point, Buena, Laurel Lake,
  Weymouth, Estell Manor, Corbin City, Newport, Leesburg, Dorothy,
  Bricksboro, Fortesque, Mauricetown, Belleplain Forest, Mays
  Landing, English Creek, Port Norris and Dividing Creek.

This includes Garden State Parkway between mile markers 30 and 33.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3914 7521 3927 7534 3958 7483 3934 7456
TIME...MOT...LOC 0443Z 237DEG 40KT 3924 7516 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB
3 follow-up statements
935 
WWUS51 KPHI 290457
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1257 AM EDT Sat Jul 29 2023

NJC001-009-011-290530-
/O.CON.KPHI.SV.W.0252.000000T0000Z-230729T0530Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
1257 AM EDT Sat Jul 29 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM EDT
FOR SOUTHWESTERN ATLANTIC...EASTERN CUMBERLAND AND NORTHWESTERN CAPE
MAY COUNTIES...

At 1257 AM EDT, a severe thunderstorm was located over Port
Elizabeth, or near Millville, moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Vineland, Millville, Cumberland, Somers Point, Buena, Laurel Lake,
Estell Manor, Corbin City, Mauricetown, Belleplain Forest, Leesburg,
Mays Landing, English Creek, Port Norris, Dividing Creek, Dorothy,
Bricksboro, Mizpah, Port Elizabeth and Bivalve.

This includes Garden State Parkway between mile markers 31 and 32.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3918 7508 3935 7521 3957 7484 3934 7458
TIME...MOT...LOC 0457Z 237DEG 40KT 3933 7499 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB
421 
WWUS51 KPHI 290511
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
111 AM EDT Sat Jul 29 2023

NJC001-009-011-290530-
/O.CON.KPHI.SV.W.0252.000000T0000Z-230729T0530Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
111 AM EDT Sat Jul 29 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM EDT
FOR SOUTHWESTERN ATLANTIC...EASTERN CUMBERLAND AND NORTHWESTERN CAPE
MAY COUNTIES...

At 111 AM EDT, a severe thunderstorm was located over Dorothy, or 10
miles east of Vineland, moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Vineland, Millville, Cumberland, Somers Point, Buena, Estell Manor,
Corbin City, Belleplain Forest, Mays Landing, English Creek, Dorothy,
Bricksboro, Mizpah, Port Elizabeth, South Vineland and Linwood.

This includes Garden State Parkway between mile markers 31 and 32.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3934 7458 3922 7494 3943 7509 3957 7484
TIME...MOT...LOC 0511Z 237DEG 40KT 3942 7482 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB
039 
WWUS51 KPHI 290524
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
124 AM EDT Sat Jul 29 2023

NJC001-009-011-290534-
/O.EXP.KPHI.SV.W.0252.000000T0000Z-230729T0530Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
124 AM EDT Sat Jul 29 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ATLANTIC...
EASTERN CUMBERLAND AND NORTHWESTERN CAPE MAY COUNTIES WILL EXPIRE AT
130 AM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

LAT...LON 3934 7458 3922 7494 3943 7509 3957 7484
TIME...MOT...LOC 0524Z 237DEG 40KT 3949 7469 

$$

MLB

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 8:04 PM EDTSevere Thunderstorm WarningPHISalem41 min
Jul 28, 8:33 PM EDTSpecial Weather StatementPHICumberland, Gloucester, Salem42 min
Jul 28, 8:36 PM EDTSpecial Marine WarningPHI54 min
Jul 28, 9:02 PM EDTSpecial Weather StatementPHICamden43 min
Jul 28, 9:18 PM EDTSpecial Weather StatementPHICape May, Cumberland, Salem42 min
Jul 28, 9:32 PM EDTSpecial Marine WarningPHI58 min
Jul 28, 9:44 PM EDTSpecial Weather StatementPHIBurlington, Camden, Mercer, Middlesex61 min
Jul 28, 10:00 PM EDTSpecial Weather StatementPHIAtlantic, Cape May45 min
Jul 28, 10:28 PM EDTSpecial Marine WarningPHI62 min
Jul 28, 10:54 PM EDTSpecial Weather StatementPHICumberland, Salem36 min
Jul 28, 11:15 PM EDTSpecial Weather StatementPHICape May30 min
Jul 28, 11:26 PM EDTSpecial Marine WarningPHI94 min
Jul 29, 12:55 AM EDTSpecial Marine WarningPHI65 min
Jul 29, 4:55 PM EDTSevere Thunderstorm WarningPHICumberland, Gloucester, Salem50 min
Jul 29, 5:05 PM EDTSpecial Marine WarningPHI85 min
Jul 29, 5:38 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden, Cumberland, Gloucester, Salem52 min
Jul 29, 5:44 PM EDTSevere Thunderstorm Warning Considerable damage threatPHISalem46 min
Jul 29, 5:51 PM EDTSpecial Marine WarningPHI114 min
Jul 29, 6:07 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland, Salem68 min
Jul 29, 6:13 PM EDTSpecial Weather StatementPHIMorris, Sussex32 min
Jul 29, 6:13 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset47 min
Jul 29, 6:26 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Salem49 min
Jul 29, 6:28 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Ocean47 min
Jul 29, 6:33 PM EDTSevere Thunderstorm WarningPHICape May42 min
Jul 29, 6:41 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset49 min
Jul 29, 6:46 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester44 min
Jul 29, 6:51 PM EDTSpecial Marine WarningPHI54 min
Jul 29, 7:19 PM EDTSpecial Marine WarningPHI56 min
Jul 29, 7:19 PM EDTSevere Thunderstorm WarningPHIMonmouth26 min
Jul 29, 7:35 PM EDTSpecial Weather StatementPHIMonmouth70 min
Jul 29, 7:53 PM EDTSpecial Marine WarningPHI97 min
Jul 29, 7:54 PM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean40 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023Every severe thunderstorm warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.